Unit 1 Lesson 2 part 1 revision

measuring unit of atomic radius is .....................

• picometer

• Barometer

• nanometer

• mm

......................... is an atom of nonmetallic element gaining an electron or more during chemical reactions

• negative ion

• positive ion

• neutral atom

.......................... are elements which have the properties of metal and nonmetals

• metals

• positive ions

• metalloids

• nonmetals

atomic size in directly proportion to atomic number in same period

• true

• false

The metallic property ......................as we go ....................... within a group.

• increases - downward

• decreases - upward

• increases - upward

• decreases - downward

....................................have big difference in electronegativity between its elements.

• polar compounds

• non-polar compounds

..................................and ....................... don’t react with water.

• cupper - silver

• iron - zinc

• cupper - zinc

• silver - iron

....................................... are metallic oxides, some of them dissolve in water giving alkaline solutions

• Basic

• Acidic

Mg ( magnesium ) reacts with HCl forming ......................... and .......................

• magnesium hydroxide + hydrogen

• magnesium chloride + hydrogen

• magnesium chloride + oxygen

• magnesium chloride + Co2

Metals react with oxygen forming metallic oxides which are known as ....................

• basic oxide

• acidic oxide

• nonmetal oxide